fix: make helm renderer to use manifest.ManifestList (#7795)
fix: make helm renderer to use manifest.ManifestList (#7795)

this change fixes the issue that helm renderer was not adding --- between charts
GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold,GoogleContainerTools/skaffold